Hey Rae ! Good to see you on the Ghiblicraft website !
The texture pack may be in your "server ressource pack" folder ! Simply find the corresponding one and add ".zip" at the end of the file. The name should be something like : "dd953303fb6a012241103e22098ef70b1a602a00".
As time goes on, we are updating the texture pack and fixing textures ^^
Hope my answer was helpfull, have a great day !